POWERED TOOTHBRUSH HEAD HAVING A TUFT BLOCK WITH A COMBINATION OF OSCILLATING MOTIONS

摘要

A powered toothbrush head that, in one embodiment, includes a head portion including a first movable tuft block configured for holding tooth cleaning elements. The first movable tuft block is operably connected to a motor-driven drift shaft for movement. An eccentric cam formed on the shaft drives the first movable tuft block via engagement with a slot formed in the body of the first movable tuft block. The first movable tuft block is movable in a combination oscillating motion comprising vertical motion and lateral pivoting or tilting motion upon rotation of the drive shaft. A related method for oscillating the first movable tuft block is disclosed.

主权项

1. A powered toothbrush head comprising:
a head portion comprising a longitudinal axis and a cavity in a front side of the head portion; a rotatable drive shaft extending through the head portion into the cavity, the drive shaft defining a first axis of rotation and including a first cam; a first movable tuft block disposed at least partially in the cavity and having an elongated slot operably engaged with the cam; the first movable tuft block including an upper portion configured for retaining tooth cleaning elements, a lower base portion, and a reduced width intermediate portion between the upper and base portions; and wherein the first movable tuft block is movable in a combination oscillating motion about the longitudinal axis comprising vertical motion and tilting motion upon rotation of the drive shaft.